Manufacturing SimCity For The NES

Late last year, news broke of impossibly rare artifact from the age of the Nintendo Entertainment System. SimCity was the classic simulation game for PC and just about every other console, and it was written for the NES but never released. Now one guy finally got around to digging out his copy, which was dumped at the Portland Retro Gaming Expos and finally put on the Internet. It’s an unfinished game but it’s mostly playable, even if it is a bit more primitive than the PC version.

[Matt] wanted to build his own copy of SimCity for the NES, so that’s what he did. It’s a project that took months of work and a ton of research, but finally there’s a professional-looking cartridge version of SimCity.

With the ROM for SimCity loose on the Internet, that part of the build was relatively easy. You can still get EPROMs or EEPROMs, UV erasers, and a good programmer will run you fifty bucks through the usual vendors. There are even places on the Internet that will split up the emulator-compatible ROM file into two files for the character and program ROM in each NES cartridge. The trick here is finding the right cartridge with the right mapper. It turns out there are only four games that you can simply drop SimCity ROM chips into and expect everything to work. All of these games cost a small fortune, but their Famicom versions are cheap.

After carefully desoldering the Famicom game, soldering in the new chips, and applying a fancy professional label, [Matt] had his cartridge version of SimCity for the NES. It’s for a Famicom, though, but you can get adapters for that. Check out the video below.

7 thoughts on “Manufacturing SimCity For The NES

    1. Yup! I got an adapter version of Wild Gunman for this exact reason. Turns out these later boards were pretty big and adding the adapter makes it too y’all for even a generic NES cart without some modification (which would’ve made the video too long).

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